Gilles Crofils

Gilles Crofils

Hands-On Chief Technology Officer

Tech leader who transforms ambitious ideas into sustainable businesses. Successfully led digital transformations for global companies while building ventures that prioritize human connection over pure tech.1974 Birth.
1984 Delved into coding.
1999 Failed my First Startup in Science Popularization.
2010 Co-founded an IT Services Company in Paris/Beijing.
2017 Led a Transformation Plan for SwitchUp in Berlin.
November 2025 Launched Nook.coach. Where conversations shape healthier habits

Time sovereignty in tech how flexible hours unlock better work and life

Abstract:

This article challenges the traditional 9-to-5 work schedule in the tech industry, arguing that rigid office hours are incompatible with the unpredictable and creative nature of tech work. It introduces the concept of "time sovereignty," which emphasizes gaining control over one’s schedule to align work with individual energy patterns and personal obligations. Drawing on examples from companies like GitLab, Google, and Automattic—which have adopted flexible or asynchronous work norms—the article offers practical steps for tech professionals to map their energy, set boundaries, and communicate availability, using tools like journals, shared calendars, and status updates. It provides advice for enforcing boundaries politely and consistently, including managing persistent pushback and renegotiating when circumstances change. The article stands out by presenting a conversational, actionable framework that encourages readers to regularly review and adapt their work systems, ultimately advocating for a personalized, evolving approach to office hours that fosters both productivity and well-being.

Rethinking the classic 9 to 5 isn’t just a tech trend—it’s a response to the real, everyday messiness of creative work. I’ve felt this firsthand, whether wrangling time zones with a multicultural team in Beijing or learning to balance work and life after moving to Lisbon. Strict schedules rarely keep up with the unpredictable routines that shape life in technology. The result? Many of us end up working against our natural pace, struggling to balance productivity, well-being, and sometimes even our sanity.

Here, I’ll share why rigid office hours rarely fit tech professionals—especially those craving more freedom and meaning. The idea of time sovereignty—taking back control of your schedule—runs through this piece, along with practical ways to build a system that supports both focus and flexibility. You’ll find steps for mapping your energy, drawing boundaries, communicating, and staying adaptable. I’ll mix in frameworks from leading companies, personal stories, and a conversational style (with a dash of humor—think of setting boundaries like pruning a stubborn tomato plant: sometimes you have to snip a few branches to let the fruit grow).

If you’re moving past big-company routines or just want your work to fit better into your life, these ideas can help you design office hours that actually work for you.

Rethinking office hours in tech

Why rigid schedules fall short

The classic 9 to 5 routine usually clashes with the unpredictable and creative nature of tech work. For many independent professionals, set schedules feel more like a barrier than a help. Standard office hours don’t fit the creative and often global setup of tech projects. Inspiration and teamwork don’t care what time it is. This becomes even clearer when you add in people’s energy patterns and personal obligations. Many end up working against themselves instead of with themselves.

From my own experience as a CTO and founder, I’ve seen that my best focus and creativity rarely show up during traditional hours. Forcing everyone to follow the same clock ignores natural energy cycles and can lead to worse performance and more stress. Some hit their stride late at night, others in the early morning—a one-size-fits-all schedule just limits potential. Some tech companies see this and have started testing more flexible approaches.

Flexible hours are now common at many top tech companies. Staff are more satisfied and burnout drops when flexibility is respected. GitLab and Google, for example, use flexible or asynchronous hours so teams can set their own moments for deep focus or meetings. These aren’t special exceptions but the usual way people work. This mindset leads to a wider shift: time sovereignty.

Time sovereignty mindset

Time sovereignty is about truly controlling your daily schedule and matching work to your highest energy moments and personal life. For many in tech, this approach brings freedom and helps stop burnout. Having control becomes key for staying motivated and satisfied long term.

But time sovereignty is more than just picking flexible hours. It’s a real change in how we think about work and time. Instead of following fixed lists or rules, it’s about building a system that can shift as your needs change. Each person gets to map out their own energy and match it to tasks. Where old management styles pushed for everyone to fit the same box, new models—like the distributed work approach at Automattic—show how people can build a rhythm that suits them. This is especially useful for those breaking out of big-company habits.

Here’s how I approach time sovereignty, informed by my background in fundamental physics (yes, the universe is messy, and so is your calendar):

  • Observe patterns: Like a physicist tracking particles, I log my energy and focus levels throughout the week. I use a simple spreadsheet: columns for time blocks, rows for energy ratings (1–5), and a few notes on mood or distractions.
  • Experiment: I try shifting deep work to my highest-energy slots (for me, that’s mid-morning and late evening). Meetings get scheduled when my brain is less sharp.
  • Iterate: Each week, I review what worked and what didn’t. Sometimes I feel like a gardener moving pots around to catch the sun—adjust, observe, repeat.

Time sovereignty is a tool to claim more personal space and avoid always feeling busy. With this shift, you can start to design a system that works for your real life, protecting your well-being on your terms.

Designing your office hours

Energy mapping

A sustainable work schedule starts by learning when you actually work best. Try tracking your moods and energy during the week. It can be as simple as jotting down notes, using a spreadsheet, or a calendar app. Soon, you may notice patterns—maybe you’re sharpest mid-morning, or you always fade late in the day.

Here’s a concrete framework I’ve used:

  1. Hourly energy log: Rate your energy (1–5) every hour for a week.
  2. Weekly review: At the end of the week, highlight your top three “peak” blocks and your three lowest.
  3. Time-blocking: Schedule your most demanding tasks in those peak blocks. Use the low-energy times for admin or shallow work.
  4. Obligation overlay: Add fixed commitments (meetings, family time, chores) to your calendar. Notice where they clash with your peaks.
  5. Adjust: If a key meeting falls during your best focus time, try negotiating a shift or moving your deep work elsewhere.

Tools that help:

  • Daily paper journals
  • Hourly rating spreadsheets
  • Apps with quick check-ins (like RescueTime or Toggl)

Prioritize high-focus tasks in your best energy zones. Less demanding stuff can fill in when you feel lower energy. The Eisenhower Matrix (urgent/important) is a simple way to make sure your best hours support real progress. After this comes flexibility.

Building in flexibility

Asynchronous practices let you handle tasks when it works for you. Shared docs, project boards, and chat channels help keep everyone on the same page without constant back-and-forth. Many tech teams have found async work protects deep focus and lets people shape their schedules. It’s also important to protect blocks for deep work—sometimes called “maker time.”

Set aside regular times when you go heads-down. Turn off alerts and skip meetings in these spots. This gives your creativity some space and helps you feel in control of your day. But no schedule should be too rigid—life can change fast.

Leave space for adjustments. Check your plan each week or month to see if it’s still working. This habit lets you stay realistic and up to date with life’s curveballs. Once you have your system, the next piece is making sure others know about your boundaries.

Communicating boundaries

Setting expectations

Letting people know your availability early keeps things smooth. You might share your work hours during onboarding, in a welcome email, or at a first meeting. Making boundaries clear before problems come up helps everyone.

Tools like shared calendars, status updates, and auto-responses can back up what you say. When others can easily see your schedule, they’re more likely to respect it.

Remind people about boundaries now and then, or bring them up during regular meetings, to keep expectations fresh and respectful. How you talk about boundaries matters, too.

Language that builds respect

Use clear but friendly language. For example: “My working hours are 9 to 5. If you message after this, I’ll reply the next business day.” This avoids confusion.

Encourage your team or collaborators to share their working hours as well. Opening up this conversation during onboarding or at the start of a project helps normalize setting boundaries. It also builds mutual respect from day one.

Repeat your boundaries when needed and use the same language each time. Over time, this makes boundaries an expected part of team life. Sometimes keeping boundaries takes extra effort, but sticking with it pays off.

Enforcing your boundaries

Responding to after-hours requests

If you get a message outside your stated hours, reply politely and clearly. For example: “Thank you for reaching out. I am offline now and will answer this during my next working hours.” This keeps expectations firm—no debate needed.

If you want, offer a simple next step: “I can’t assist tonight, but will handle it first thing in the morning.” You stay professional and supportive while keeping your limits.

Over time, this habit makes it easier to unplug and reduces pressure to be always on.

Digital detox strategies

Sometimes, the only way to truly protect your boundaries is to step away from screens. I’ve started planning tech-free weekends—no laptop, no Slack, just a walk in the park or a bit of gardening (my tomatoes in Lisbon thank me). Try these:

  • Tech-free blocks: Schedule one evening a week with all devices off.
  • Weekend detox: Pick one weekend a month to go offline—tell clients and teammates in advance.
  • Physical cues: Put your phone in another room, or use a “work box” to lock away devices after hours.

These small rituals help reset your mind and remind everyone (including yourself) that you’re not always available.

Managing persistent pushback

Sometimes, people keep crossing your boundaries. In my early days as a founder, I had a client who’d ping me at midnight, expecting instant answers. After a few polite reminders, I put my hours in writing—in the contract, onboarding docs, and even my email signature. When the late-night messages kept coming, I replied: “As agreed, I’m offline after 7 pm. I’ll respond in the morning.” It felt awkward at first, but over time, the client adjusted—and so did my stress levels.

If problems persist:

  • Get your agreed hours in writing (contracts, onboarding docs, email threads).
  • Restate your boundaries clearly, along with your reasons.
  • Use auto-responders and scheduling apps to reinforce your limits.
  • Encourage team members to hold each other accountable.

Boundaries aren’t meant to stay the same forever, but they need to be respected.

Evolving your system

Review and refine

Your office hours should change as your work and life change. I do a quick review every season—usually after a big life shift, like moving from Berlin to Lisbon. Here’s my process:

  1. Self-check: I jot down what’s working and what’s not in a journal (sometimes with a coffee, sometimes with a glass of vinho verde).
  2. Team feedback: I ask collaborators if my availability still fits our needs.
  3. Adjust: If I notice I’m working too late or missing out on Lisbon’s sunshine, I tweak my hours and update my calendar.

You can use:

  • Short journal entries
  • Fast surveys
  • Group check-ins

Regular reviews spot problems before they become habits. Sometimes, you’ll need to update your rules with a more official conversation.

Renegotiating boundaries

If things change—a new project, a family need, or a different role—you may need to rethink your office hours. One good method is to communicate directly: state what you notice, say how you feel, and make a clear request. For example: “I’ve noticed our meetings often run late. I feel overwhelmed and would like more balance. Can we plan to finish on time or set a new meeting hour?”

Be as specific as you can, and invite input from others. This keeps trust high and helps people feel involved in the solution.

Once everyone agrees, write down the new rules. Update shared calendars, onboarding docs, or team guides so there’s no confusion later. Good documentation helps changes stick and makes life easier as your needs shift.

Rethinking office hours in tech isn’t just about wanting flexibility. It’s about building a work life that actually matches how you work and live. Moving away from rigid schedules can bring more energy, sharper focus, and an easier balance between work and personal life. Time sovereignty means you get to choose your best moments, protect your creative space, and set boundaries that really support you—even if that means saying “no” to a late-night Slack or planning a tech-free Sunday. There’s no single perfect path—your system can shift as your needs do. What small change could make your workday really fit you? Try it out, and maybe you’ll find a bit more satisfaction, energy, and even time for your tomatoes.

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25 Years in IT: A Journey of Expertise

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Nook
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Making health coaching feel like talking to a friend who actually gets you.

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My Own Adventures
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As Head of My Own Adventures, I’ve delved into AI, not just as a hobby but as a full-blown quest. I’ve led ambitious personal projects, challenged the frontiers of my own curiosity, and explored the vast realms of machine learning. No deadlines or stress—just the occasional existential crisis about AI taking over the world.

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SwitchUp
(Berlin/Remote)

Hands-On Chief Technology Officer
For this rapidly growing startup, established in 2014 and focused on developing a smart assistant for managing energy subscription plans, I led a transformative initiative to shift from a monolithic Rails application to a scalable, high-load architecture based on microservices.
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Second Bureau
(Beijing/Paris)

CTO / Managing Director Asia
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SwitchUp Logo

SwitchUp
SwitchUp is dedicated to creating a smart assistant designed to oversee customer energy contracts, consistently searching the market for better offers.

In 2017, I joined the company to lead a transformation plan towards a scalable solution. Since then, the company has grown to manage 200,000 regular customers, with the capacity to optimize up to 30,000 plans each month.Role:
In my role as Hands-On CTO, I:
- Architected a future-proof microservices-based solution.
- Developed and championed a multi-year roadmap for tech development.
- Built and managed a high-performing engineering team.
- Contributed directly to maintaining and evolving the legacy system for optimal performance.
Challenges:
Balancing short-term needs with long-term vision was crucial for this rapidly scaling business. Resource constraints demanded strategic prioritization. Addressing urgent requirements like launching new collaborations quickly could compromise long-term architectural stability and scalability, potentially hindering future integration and codebase sustainability.
Technologies:
Proficient in Ruby (versions 2 and 3), Ruby on Rails (versions 4 to 7), AWS, Heroku, Redis, Tailwind CSS, JWT, and implementing microservices architectures.

Arik Meyer's Endorsement of Gilles Crofils
Second Bureau Logo

Second Bureau
Second Bureau was a French company that I founded with a partner experienced in the e-retail.
Rooted in agile methods, we assisted our clients in making or optimizing their internet presence - e-commerce, m-commerce and social marketing. Our multicultural teams located in Beijing and Paris supported French companies in their ventures into the Chinese market

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Please be aware that the articles published on this blog are created using artificial intelligence technologies, specifically OpenAI, Gemini and MistralAI, and are meant purely for experimental purposes.These articles do not represent my personal opinions, beliefs, or viewpoints, nor do they reflect the perspectives of any individuals involved in the creation or management of this blog.

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